I'm close to your total payload and I use 38-622 $15 tires from Amazon on my Dyad rims (36 in front, 40 in back) on screened trails and rough roads. Certainly no concerns.
Someday I'm gonna try Marathon Supremes to see if they're an upgrade I'd value. But frankly I find my current tires okay. Yours, Thomas Lynn Skean -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/wHBWA8xFupgJ. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.